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Processing Hierarchical Data in Streaming Mappings

Data objects in a streaming mapping can process hierarchical data through complex data types. If the source contains hierarchical data, you must enable the read data operation to project columns as complex data types.

The following are the complex data types:

Array. An array is an ordered collection of elements.

Map. A map is an unordered collection of key-value pair elements.

Struct. A struct is a collection of elements of different data types.

The following table shows the format and complex data types that sources in a Streaming mapping support:

Format	Schema Type	Amazon Kinesis Streams	Azure Event Hub	JMS	Kafka	MapR Streams
Avro	Flat	Supported	Supported	Not supported	Supported	Supported
Avro	Hierarchical	Supported	Supported	Not supported	Supported	Supported
Binary	Binary	Supported	Supported	Supported	Supported	Supported
Flat	Flat	Supported	Supported	Supported	Supported	Not Supported
JSON	Flat	Supported	Supported	Supported	Supported	Supported
JSON	Hierarchical	Supported	Supported	Supported	Supported	Supported
XML	Flat	Supported	Supported	Supported	Supported	Supported
XML	Hierarchical	Supported	Supported	Supported	Supported	Supported